Generation III Internal Engine 1997-2006 LS1 | LS6
Sponsored by:
Sponsored by:

Safe Rev limit for an LQ4?

Thread Tools
 
Search this Thread
 
Old Oct 11, 2009 | 07:40 PM
  #1  
OUTLWZ's Avatar
Thread Starter
Staging Lane
 
Joined: May 2009
Posts: 76
Likes: 0
From: Waco,Tx
Default Safe Rev limit for an LQ4?

I posted this in the tuning board with no replys, Going back to the tuner tomorrow so Im looking for some replys before then.

My set up is a 01 Z28 A4 with an LQ4 with ASA cam, 226/236 .525 lift 110LSA. Right now the rev limit is set at 6200.

Should I keep it at 6200 or would it be ok to raise it alittle?

Thanks
Reply
Old Oct 11, 2009 | 08:01 PM
  #2  
chasgiv3's Avatar
9 Second Club
iTrader: (1)
 
Joined: Nov 2001
Posts: 782
Likes: 0
From: Chicago
Default

My motor (LQ4) is balanced and I feel pretty comfortable going max 7500RPM. I shift it at the track around 7000RPM.
Reply
Old Oct 11, 2009 | 09:27 PM
  #3  
Mike454SS's Avatar
TECH Addict
20 Year Member
Photogenic
iTrader: (4)
 
Joined: Oct 2004
Posts: 2,142
Likes: 9
From: South Windsor, CT
Default

What year LQ4 is it? Does it have stock rod bolts in it?
Reply
Old Oct 11, 2009 | 09:53 PM
  #4  
OUTLWZ's Avatar
Thread Starter
Staging Lane
 
Joined: May 2009
Posts: 76
Likes: 0
From: Waco,Tx
Default

Originally Posted by Mike454SS
What year LQ4 is it? Does it have stock rod bolts in it?
It is a 2004 and its a stock long block, except for the cam and springs. Motor has 41K miles on it.
Reply
Old Oct 12, 2009 | 11:00 AM
  #5  
chasgiv3's Avatar
9 Second Club
iTrader: (1)
 
Joined: Nov 2001
Posts: 782
Likes: 0
From: Chicago
Default

If it's a stock long block I wouldn't go above 6200. The balancing at the factory is not exactly perfect not to mention the rotating assembly uses bolts that I wouldn't trust beyond 6200. I made an assumption you were talking about a built motor.
Reply
Old Oct 13, 2009 | 11:49 AM
  #6  
Mike454SS's Avatar
TECH Addict
20 Year Member
Photogenic
iTrader: (4)
 
Joined: Oct 2004
Posts: 2,142
Likes: 9
From: South Windsor, CT
Default

2004 should have better rod bolts than older LS1's and the original LQ4's...I think you'd be safe going a little higher than 6200...6500 maybe?
Reply
Old Oct 13, 2009 | 12:02 PM
  #7  
NemeSS's Avatar
TECH Senior Member
20 Year Member
Photogenic
Photoriffic
Shutterbug
iTrader: (127)
 
Joined: Sep 2005
Posts: 6,889
Likes: 9
From: Houston,TX
Default

ive gone 6500 no prob. with stock rod bolts. on stock lq4 bottom end
Reply
Old Oct 13, 2009 | 05:45 PM
  #8  
lsxmalibu's Avatar
TECH Enthusiast
iTrader: (50)
 
Joined: Mar 2008
Posts: 715
Likes: 2
Default

ive been to 7000 alot on a stock lq4
Reply
LS1 Tech Stories

The Best V8 Stories One Small Block at Time

story-0

6 Gifts Neither Your Dad Nor Grad Will Shove Into the 'Trinket Drawer'

 Brett Foote
story-1

Topdon ONE vs. Artidiag 800 BT2: Which is the Diagnostic Tablet For You?

 Pouria Savadkouei
story-2

Gas Monkey Built a 6-Wheel Ferrari Testarossa With a Corvette LT4 Engine

 Verdad Gallardo
story-3

7 Most Reliable High-Performance Engines GM Has Ever Built

 Verdad Gallardo
story-4

Amazing '71 Camaro Restomod Is Modern Muscle Car Under the Skin

 Verdad Gallardo
story-5

6 Common C5 Corvette Failures and What's Involved In Repairing Them

 Pouria Savadkouei
story-6

Retro Modern Bandit Pontiac Trans AM Comes With Burt Reynolds' Autograph

 Verdad Gallardo
story-7

Top 10 Greatest Cadillac V Series Performance Models Ever, Ranked

 Pouria Savadkouei
story-8

Top 10 Most Powerful Chevy Trucks Ever Made!

 
story-9

Hennessey's New Supercharged Silverado ZR2 Has 700 HP

 Verdad Gallardo
Old Oct 13, 2009 | 06:41 PM
  #9  
SOMbitch's Avatar
TECH Senior Member
iTrader: (8)
 
Joined: Sep 2007
Posts: 6,881
Likes: 3
Default

Look at the dyno and spin it 2-300 past where the power peaks. You don't mention your IM but I bet it is <6500 with that cam...
Reply
Old Oct 13, 2009 | 08:17 PM
  #10  
OUTLWZ's Avatar
Thread Starter
Staging Lane
 
Joined: May 2009
Posts: 76
Likes: 0
From: Waco,Tx
Default

I got it raised to 6600. We didnt dyno it yesterday but he tweaked it and got some more power out of it.

Feels alot better and the TC is locking up like it should now.
Reply
Old Oct 14, 2009 | 01:37 AM
  #11  
Soul TKR's Avatar
TECH Junkie
iTrader: (4)
 
Joined: Jun 2004
Posts: 3,543
Likes: 2
From: San Diego, CA
Default

my limit is 7000 on my LQ4... but I never go that high. I usually shift around 6200 or so I'd say. Anything around 7000 is asking for trouble IMO and not really needed unless your cam calls for it...
Reply




All times are GMT -5. The time now is 10:55 PM.

story-0
6 Gifts Neither Your Dad Nor Grad Will Shove Into the 'Trinket Drawer'

Don't get dad new socks or a grill brush this year.

By Brett Foote | 2026-06-04 18:13:20


VIEW MORE
story-1
Topdon ONE vs. Artidiag 800 BT2: Which is the Diagnostic Tablet For You?

Slideshow: We take a close look at the ONE and Artidiag 800BT2 diagnostic tools from Topdon and the reasons to buy one over the other.

By Pouria Savadkouei | 2026-05-28 11:05:11


VIEW MORE
story-2
Gas Monkey Built a 6-Wheel Ferrari Testarossa With a Corvette LT4 Engine

Slideshow: The controversial Ferrari F6 swaps its original flat-12 for a Corvette Z06-derived LT4 V8 and sends power to four rear wheels through a custom-built drivetrain.

By Verdad Gallardo | 2026-05-26 18:23:54


VIEW MORE
story-3
7 Most Reliable High-Performance Engines GM Has Ever Built

Slideshow:These GM engines didn't just make huge power, they survived abuse, boost, track days, and six-digit mileage with a reputation for refusing to quit.

By Verdad Gallardo | 2026-05-21 16:45:27


VIEW MORE
story-4
Amazing '71 Camaro Restomod Is Modern Muscle Car Under the Skin

Slideshow: This heavily modified 1971 Camaro mixes classic muscle car styling with a fifth-generation Camaro interior and modern LS3 power.

By Verdad Gallardo | 2026-05-12 18:06:42


VIEW MORE
story-5
6 Common C5 Corvette Failures and What's Involved In Repairing Them

Slideshow: From wobbling harmonic balancers to failed EBCMs, these are the issues that define long-term C5 ownership and what repairs typically involve.

By Pouria Savadkouei | 2026-05-07 18:44:57


VIEW MORE
story-6
Retro Modern Bandit Pontiac Trans AM Comes With Burt Reynolds' Autograph

Slideshow: A modern Camaro transformed into a retro icon, this limited-run "Bandit" build blends nostalgia with brute force in a way few revivals manage.

By Verdad Gallardo | 2026-04-21 13:57:02


VIEW MORE
story-7
Top 10 Greatest Cadillac V Series Performance Models Ever, Ranked

Slideshow: Cadillac didn't just crash the high-performance luxury vehicle party, it showed up loud, supercharged, and occasionally a little unhinged...

By Pouria Savadkouei | 2026-04-16 10:05:15


VIEW MORE
story-8
Top 10 Most Powerful Chevy Trucks Ever Made!

Slideshow: Top ten most powerful Chevy trucks ever made

By | 2026-03-25 09:22:26


VIEW MORE
story-9
Hennessey's New Supercharged Silverado ZR2 Has 700 HP

Slideshow: Hennessey has turned the Silverado ZR2 into a 700-hp off-road monster with supercharged V8 power and a limited production run.

By Verdad Gallardo | 2026-03-24 18:57:52


VIEW MORE